Metallic packing ring



Aug. 21'; 1928.

, R. H. KAUTZKY METALLIC PACKING RING Filed Sept. 6, 1927 dawn/or 1 311 01}!!! )1. 2111111212 fiw-7Wflff0l$sV5 PatentedAug. 21, 1928. a H

UNIT DwSTAT PATENT nunon a aj ar. nan pa nt, or pins enemie lipwn, 'issmnon ro WALTER n KAUTZKY,

a e @E Q NESJI QWA- sesam A KIINQ'B N epp en fi d sept r y 1927. Serial in 217,753; I

-My invention has to do with metallicpackin g rings used for example, on pistonrods of steam engines. a 1 I The object of my invention is to provide a metallic packing ring composed of two sections and havingjoint's of a peculiar construction which interlock the two sections into an "indistortable ring unit and having no sharp joint edges or weal; body portionssubject to breakage. f 'Still' a metallic packing ring having joint ends each member of which has spaced substantially radially arranged shoulders and intermediate portions, the. surfaces of'which are substantially concentric with the rod on which the packing ismounted which practically eliminates any frictional joint resistanceto auto-'- matically closing and taki u as Wear sets 1n. a 1 i Still a further object is to provide such a I metallic packing ring provided with recesses or cups in its periphery for affording greater" body flexibility and" lighter weight, and

' greater surface earer pressnre to exert.

itself on the packing ring radially, so vthat it will more readily conform to a non leakaihle joint at all times.

Generally, speaking, it is my'objectto pro-.

vide a semisectional metallic packing ring which on struct-ion meet the severe conditions of modern service now in use.

i One of the important purposesofmy present invention is to provide such a packingring, the sections of which when assembled onthe-rod to be packed, interlock themselves :into a unit which, cannot be distorted outof its proper position in service,"

WVith these and other objects in view my invent-ion consists in the construction, ar, rangement and combination of the various" parts of my device, whereby the objects -c.011-

templated are attained, as hereinafter more fully set forth,pointed out my claim, and illustrated iirtlie accompanying drawings,

' in which: I

Figure 1 is what may be of one side of a section of my improved metallic packing ring.

Figure 2 is an end elevation of the section further object is to providesuch a accountof the novel features of-conbriefly mentioned above and heroin after more any set forth, Wlll effectively;

called, a'plan view shown in Figure 1 viewed from the inside of the ring. t 1 1" i Figure 3 is an invertedplan view-of the same section. U i I j T1g ure 4 -is a plan view ofthe completed ring-made of tw Ofltlle sections shown in; Figurelw t Figure 5 is a detail sectional view, through a portion of a cylinder head and stnfling box through which projects a vpiston rod equipped with a metallic packing ringv embodying my invention shown in section onthe line of *Ifigure 4,; and i H 7 Figure 6 is a detail sectionalview talren on the, line 6'77'76 of Figure 5. v I

For greater convenience :in explaining my metallic packing, I will first refer tooneof thepossible environments in wl ichilw packi glandlG rests against the; gasket lfifwiar ranged b t ee t nd the ahniiler flange 12 sshnwn and islliel ed thereto, s a 18Iai1d s h rod kv xten s- 1 threugh Y A ia ent o the nne was bf he g n is a straight joint ringQO Between the 1 1 r ng-2Q d th peekin s n T 6, s a

g ound surfa iq tasindica e a 221 Ne .iQ t jo ng QQIiS t e flat e' lef mai proved sectional metallicpaeking ring which rlng is lndicated generally by the character A. Adjaeentto the tapered side cente ing A 3 cen p 4.: w h, i yieldi li ii e against th rin Aby'meens c th ee l g to provide a substantially constant steam tight oint aroundthepisfton rod 1;]; where it em rges mm th cylinder xls i hibi is afforded by mywpresent invention;

My improved metallic packing ring; is made in two sections each of which extends a litt e m re than. half-W y e 'Ollpi ed 1 I s o great im rt ce an v y iifiu t The ec ions-. eexaetly e k The '1 inner face of each section is made to conferin tofthe shape of the piston rod 14 except for ashort distanceat one end where the joint member hereinafter described, is formed. Each section has what is for convenience called, the outer face 28, in a plane at right angles to the shaft 14: and'a narrow inner face in a corresponding parallel plane.

Adjacent to the face 28 each section has an annular outer surface portion 32concentr1c with the shaft 14:. Between the surface por-" tion 32 and the face 30, the outersurface of trated at the upper part of Figure 5.v .Oneh

advantage in makingthe rod bearing surface of each section extend around a little more than a half circleis that eachsectioniwhena applied on the piston rod 14 will retain itself thereon prior to the assembling or application of the other segment. a

At one end of each ring section is a joint member 38 and at the other end is a joint member 40. The inner surface *of the joint member 40 is cut away to form shoulders 40 and40 spaced circumferentially of. the rod- 14 and affording arecess 40 whichin cross fits into the recess 40 of the othersectionsection, extends from the inner surface of the ring spaced from the face outwardly and toward the face'28 as shown in F1gure'2. At

the other end of each section, the o-utersurface of the material is cut away as indicated at 42in Figure l-to leave the joint member 38 adapted to slide into the recess 4:0 except only that the oint member 38 is longer circum ferentially of the section than the joint member 40. I i

Thus when two of the sections are placed together, the joint section 38 of each-section The joint section38 has circumferentially spaced 'shoulders 38 and 38 which are in planes substantially radial'of the rod 14.

When the two sections are assembled together, each shoulder 88 'engages a shoulder of the adjacent section but because the joint member 38 'is longer than the joint memrightzangles'tothe axis of the ring and an in- 'clinedside face, and an intermediate outer ber40, the shoulders LO andBS arespaced apart as illustratedfor instance, in Figure 6. On the outer surface of the ring sections between the oints, the ring sections are pro- Assuming that two of these'ctions are fitted together in the manner hereinbefore referred to and in the'asseinbly shown in Figure 5,

steam will then pass from the interiorv of the cylinder into the chamber B'in which the 7 spring 26 and the packing ring assembly are located.

i In practice steam willleak aroundthe follower 24 and. pressure will be inserted inwardlyupon the surface 32 and upon the surfaces of the pockets46. The pockets 46 are dlstributed around a ring with substantial uniformity so that the pressure on the packing ring will be distributed around the rin for pressing it against the piston rod 14: and

he packing'ring, a two. partring each of the sections of which extend a little more than half way around thepiston rod so that when slipped on the piston rod, it will remainin position thereon; The sectionsea'ch have one flat" face in theplane at rightangles to the axis of the pistonrod and one inclined or bevel'ed face with an intermediate. facezsubstanitially parallel with that of the piston rod.

The overlapping portions of the lap joints aslndlcated for instance at 50 n Figure 6,

I Whilethey are inclined from side'edge to side edge, are arranged circumferentially of the ring in lines concentric to the interior surface of the ring and the piston rod.

' I claim as my invention: v A metallic packing ring comprising a pair of similar sections having overlapping joints with radials'houlders, the inner overlapped joint portions being longer thanfthe "outer overlapping ointportions, the cross sectional areas of the inner shoulders being less than the cross sectional areas of the outer shoulders, the inner shoulders abutting for resisting the frictionof the packing ring excessive I of what is necessary to maintain a tight joint on its rod, andthe outer shoulders not abut-. ting to allow thetwo sections to automatically take up and close uniformly aswearsets in,

Thus there is provided in the presentmetaleach section having a. side face in aplane at face concentric with the axis of the ring, the

outerportionof each section beingfprovided with regularly spaced recesses of substantiahi circumferential lengthand of width greater RUDOLPH KAUTZKY. 

